#include "gtlAutomember.h"
#include "gtlStructures.h"
#include "gtlDebug.h"
#include "gtlStrings.h"

#include "external_libs/eastl/include/eastl/map.h"

///************************************************************************/
/// Implementations of different functions that don't need their own files
///************************************************************************/

namespace GTL
{
	namespace Hash
	{

		/// Lifted straight from zlib
		//static unsigned long crc32_update(unsigned long crcword, const unsigned char *data, int len)
		uint32_t CRC32(const uint8_t* buffer, size_t size)
		{
			static const unsigned long crc32_table[256] = {
				0x00000000L, 0x77073096L, 0xEE0E612CL, 0x990951BAL,
				0x076DC419L, 0x706AF48FL, 0xE963A535L, 0x9E6495A3L,
				0x0EDB8832L, 0x79DCB8A4L, 0xE0D5E91EL, 0x97D2D988L,
				0x09B64C2BL, 0x7EB17CBDL, 0xE7B82D07L, 0x90BF1D91L,
				0x1DB71064L, 0x6AB020F2L, 0xF3B97148L, 0x84BE41DEL,
				0x1ADAD47DL, 0x6DDDE4EBL, 0xF4D4B551L, 0x83D385C7L,
				0x136C9856L, 0x646BA8C0L, 0xFD62F97AL, 0x8A65C9ECL,
				0x14015C4FL, 0x63066CD9L, 0xFA0F3D63L, 0x8D080DF5L,
				0x3B6E20C8L, 0x4C69105EL, 0xD56041E4L, 0xA2677172L,
				0x3C03E4D1L, 0x4B04D447L, 0xD20D85FDL, 0xA50AB56BL,
				0x35B5A8FAL, 0x42B2986CL, 0xDBBBC9D6L, 0xACBCF940L,
				0x32D86CE3L, 0x45DF5C75L, 0xDCD60DCFL, 0xABD13D59L,
				0x26D930ACL, 0x51DE003AL, 0xC8D75180L, 0xBFD06116L,
				0x21B4F4B5L, 0x56B3C423L, 0xCFBA9599L, 0xB8BDA50FL,
				0x2802B89EL, 0x5F058808L, 0xC60CD9B2L, 0xB10BE924L,
				0x2F6F7C87L, 0x58684C11L, 0xC1611DABL, 0xB6662D3DL,
				0x76DC4190L, 0x01DB7106L, 0x98D220BCL, 0xEFD5102AL,
				0x71B18589L, 0x06B6B51FL, 0x9FBFE4A5L, 0xE8B8D433L,
				0x7807C9A2L, 0x0F00F934L, 0x9609A88EL, 0xE10E9818L,
				0x7F6A0DBBL, 0x086D3D2DL, 0x91646C97L, 0xE6635C01L,
				0x6B6B51F4L, 0x1C6C6162L, 0x856530D8L, 0xF262004EL,
				0x6C0695EDL, 0x1B01A57BL, 0x8208F4C1L, 0xF50FC457L,
				0x65B0D9C6L, 0x12B7E950L, 0x8BBEB8EAL, 0xFCB9887CL,
				0x62DD1DDFL, 0x15DA2D49L, 0x8CD37CF3L, 0xFBD44C65L,
				0x4DB26158L, 0x3AB551CEL, 0xA3BC0074L, 0xD4BB30E2L,
				0x4ADFA541L, 0x3DD895D7L, 0xA4D1C46DL, 0xD3D6F4FBL,
				0x4369E96AL, 0x346ED9FCL, 0xAD678846L, 0xDA60B8D0L,
				0x44042D73L, 0x33031DE5L, 0xAA0A4C5FL, 0xDD0D7CC9L,
				0x5005713CL, 0x270241AAL, 0xBE0B1010L, 0xC90C2086L,
				0x5768B525L, 0x206F85B3L, 0xB966D409L, 0xCE61E49FL,
				0x5EDEF90EL, 0x29D9C998L, 0xB0D09822L, 0xC7D7A8B4L,
				0x59B33D17L, 0x2EB40D81L, 0xB7BD5C3BL, 0xC0BA6CADL,
				0xEDB88320L, 0x9ABFB3B6L, 0x03B6E20CL, 0x74B1D29AL,
				0xEAD54739L, 0x9DD277AFL, 0x04DB2615L, 0x73DC1683L,
				0xE3630B12L, 0x94643B84L, 0x0D6D6A3EL, 0x7A6A5AA8L,
				0xE40ECF0BL, 0x9309FF9DL, 0x0A00AE27L, 0x7D079EB1L,
				0xF00F9344L, 0x8708A3D2L, 0x1E01F268L, 0x6906C2FEL,
				0xF762575DL, 0x806567CBL, 0x196C3671L, 0x6E6B06E7L,
				0xFED41B76L, 0x89D32BE0L, 0x10DA7A5AL, 0x67DD4ACCL,
				0xF9B9DF6FL, 0x8EBEEFF9L, 0x17B7BE43L, 0x60B08ED5L,
				0xD6D6A3E8L, 0xA1D1937EL, 0x38D8C2C4L, 0x4FDFF252L,
				0xD1BB67F1L, 0xA6BC5767L, 0x3FB506DDL, 0x48B2364BL,
				0xD80D2BDAL, 0xAF0A1B4CL, 0x36034AF6L, 0x41047A60L,
				0xDF60EFC3L, 0xA867DF55L, 0x316E8EEFL, 0x4669BE79L,
				0xCB61B38CL, 0xBC66831AL, 0x256FD2A0L, 0x5268E236L,
				0xCC0C7795L, 0xBB0B4703L, 0x220216B9L, 0x5505262FL,
				0xC5BA3BBEL, 0xB2BD0B28L, 0x2BB45A92L, 0x5CB36A04L,
				0xC2D7FFA7L, 0xB5D0CF31L, 0x2CD99E8BL, 0x5BDEAE1DL,
				0x9B64C2B0L, 0xEC63F226L, 0x756AA39CL, 0x026D930AL,
				0x9C0906A9L, 0xEB0E363FL, 0x72076785L, 0x05005713L,
				0x95BF4A82L, 0xE2B87A14L, 0x7BB12BAEL, 0x0CB61B38L,
				0x92D28E9BL, 0xE5D5BE0DL, 0x7CDCEFB7L, 0x0BDBDF21L,
				0x86D3D2D4L, 0xF1D4E242L, 0x68DDB3F8L, 0x1FDA836EL,
				0x81BE16CDL, 0xF6B9265BL, 0x6FB077E1L, 0x18B74777L,
				0x88085AE6L, 0xFF0F6A70L, 0x66063BCAL, 0x11010B5CL,
				0x8F659EFFL, 0xF862AE69L, 0x616BFFD3L, 0x166CCF45L,
				0xA00AE278L, 0xD70DD2EEL, 0x4E048354L, 0x3903B3C2L,
				0xA7672661L, 0xD06016F7L, 0x4969474DL, 0x3E6E77DBL,
				0xAED16A4AL, 0xD9D65ADCL, 0x40DF0B66L, 0x37D83BF0L,
				0xA9BCAE53L, 0xDEBB9EC5L, 0x47B2CF7FL, 0x30B5FFE9L,
				0xBDBDF21CL, 0xCABAC28AL, 0x53B39330L, 0x24B4A3A6L,
				0xBAD03605L, 0xCDD70693L, 0x54DE5729L, 0x23D967BFL,
				0xB3667A2EL, 0xC4614AB8L, 0x5D681B02L, 0x2A6F2B94L,
				0xB40BBE37L, 0xC30C8EA1L, 0x5A05DF1BL, 0x2D02EF8DL
			};
			uint32_t crcword = 0;
			crcword ^= 0xFFFFFFFFL;
			while (size--) {
				unsigned long newbyte = *buffer++;
				newbyte ^= crcword & 0xFFL;
				crcword = (crcword >> 8) ^ crc32_table[newbyte];
			}
			return crcword ^ 0xFFFFFFFFL;
		}

	}

  namespace AutoMembers
  {

    AutoMember* Producible::MakeTree()
    {
#ifdef GTL_DEBUG
			for (GTL::AutoMembers::AutoMember* i=mAutoMemberHead; i; i = i->Next)
			{
				GTL_ASSERT(!i->mDebugAutoMemberNotAddedToPostOrderList, 
					"New AutoMember class declaration does not have AddAutoMemberToPostOrderList in topmost constructor!");
			}
#endif
      return MemberList::MakeTree(
        MemberList(mAutoMemberHead, mAutoMemberTail, false), 
        MemberList(mAutoMemberPostOrderHead, mAutoMemberPostOrderTail, true)
        );
    }

    //eastl::vector<AutoMember*>* Producible::mCreatingMembers = 0;
    Producible* Producible::mCreatingObject = 0;
    AutoMember* Producible::mAutoMemberHead = 0;
    AutoMember* Producible::mAutoMemberTail = 0;
    AutoMember* Producible::mAutoMemberPostOrderHead = 0;
    AutoMember* Producible::mAutoMemberPostOrderTail = 0;

    AutoMember::AutoMember() : Next(0), Prev(0), NextPO(0), PrevPO(0), NextSibling(0), Children(0), ParentMember(0)
    {
#ifdef GTL_DEBUG
			mDebugAutoMemberNotAddedToPostOrderList = true;
#endif
      AutoMember*& head = Producible::mAutoMemberHead;
      AutoMember*& tail = Producible::mAutoMemberTail;

      if (!head)
        head = this;
      if (tail)
      {
        tail->Next = this;
        this->Prev = tail;
      }
      tail = this;

      ParentProducible = Producible::GetCreatingObject();
    }


    void AutoMember::AddAutoMemberToPostOrderList()
    {
#ifdef GTL_DEBUG
			mDebugAutoMemberNotAddedToPostOrderList = false;
#endif
      AutoMember*& po_head = Producible::mAutoMemberPostOrderHead;
      AutoMember*& po_tail = Producible::mAutoMemberPostOrderTail;
      if (!po_head)
        po_head = this;
      if (po_tail)
      {
        po_tail->NextPO = this;
        this->PrevPO = po_tail;
      }
      po_tail = this;
    }

    MemberList MemberList::Upto(int lim)
    {
      int c = 0;
      for (AutoMember* i = Head; i!=(IsPost?(Tail->NextPO):(Tail->Next)); i = IsPost?(i->NextPO):(i->Next))
      {
        c++;
        if (c == lim)
          return MemberList(Head, i, IsPost);
      }
      return MemberList(0, 0, IsPost);
    }

    MemberList MemberList::From(int lim)
    {
      int c = 0;
      for (AutoMember* i = Head; i!=(IsPost?(Tail->NextPO):(Tail->Next)); i = IsPost?(i->NextPO):(i->Next), c++)
      {
        if (lim == c)
          return MemberList(i, Tail, IsPost);
      }
      return MemberList(0, 0, IsPost);
    }


    AutoMember* MemberList::MakeTree( MemberList r, MemberList o )
    {
      AutoMember* root = r.Head;
      GTL_ASSERT(root == o.Tail);
      if (r.IsSingle())
      {
        return root;
      } else
      {
        AutoMember* myroot = root;
        r = r.WithoutFirst_Pre();
        o = o.WithoutLast_Post();
        while (!r.IsEmpty())
        {
          AutoMember* first = r.Head;
          int lim = -1, c = 0;
          for (AutoMember* i=o.Head; i != o.Tail->NextPO; i = i->NextPO, c++)
          {
            if (i == first)
            {
              lim = c+1;
              break;
            }
          }
          GTL_ASSERT(lim != -1);
          AutoMember* subtree = MakeTree(r.Upto(lim), o.Upto(lim));
          if (myroot->Children)
          {
            AutoMember* last_sibling = myroot->Children;
            while (last_sibling->NextSibling)
              last_sibling = last_sibling->NextSibling;
            last_sibling->NextSibling = subtree;
          }
          else
            myroot->Children = subtree;
          subtree->ParentMember = myroot;

          r = r.From(lim);
          o = o.From(lim);
        }
        return myroot;
      }
    }
  }

	namespace Producer
	{
		typedef eastl::map<const char*, TypeProducer, GTL::Strings::StringCompareFunctor> ProducerMapType;
		static ProducerMapType* mProducerMap = 0;

		void RegisterTypeProducer( const char* name, TypeProducer producer )
		{
			static bool ProducerMapCreated = false;
			if (!ProducerMapCreated)
			{
				mProducerMap = new ProducerMapType;
				ProducerMapCreated = true;
			}

			//if (mProducerMap->find(name) != mProducerMap->end())
				//Backend->LogWarning("Reregistered producible type `%s`", name.c_str());
	#ifdef GTL_DEBUG
			GTL_ASSERT(mProducerMap->find(name) == mProducerMap->end(), "Reregistered producible type `%s`", name)
	#endif

			(*mProducerMap)[name] = producer;
		}

		void* ProduceType( const char* name )
		{
			if (!mProducerMap)
				return 0;

			ProducerMapType::iterator it = mProducerMap->find(name);
			if (it != mProducerMap->end())
			{
				TypeProducer prod = it->second;
				return prod();
			}

			//Backend->LogWarning("Trying to produce unknown type `%s`", name.c_str());
	#ifdef GTL_DEBUG
			GTL_CRITICAL_FAILURE("Trying to produce unknown type `%s`", name)
	#endif
			return 0;
		}
	}
}

/// FIXME: Temporary memory allocators for EASTL
void* operator new[](size_t size, const char* pName, int flags, unsigned debugFlags, const char* file, int line)
{
  return malloc(size);
}
void* operator new[](size_t size, size_t alignment, size_t alignmentOffset, const char* pName, int flags, unsigned debugFlags, const char* file, int line)
{
  return malloc(size);
}